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   源码介绍

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package com.example.zexlistview;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseExpandableListAdapter;
import android.widget.ImageView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

public class ExAdapter extends BaseExpandableListAdapter implements
		OnItemClickListener {

	private GridlistView gridlistView;
	private LayoutInflater layoutInflater;
	private SimpleAdapter simpleAdapter;
	private Context context;
	private List<TreeNode> treeNodes = new ArrayList<ExAdapter.TreeNode>();

	public ExAdapter(Context context) {
		this.context = context;
		layoutInflater = layoutInflater.from(context);
	}

	static public class TreeNode {
		Object parent;
		Integer parentImg;
		List<Map<String, Object>> childList = new ArrayList<Map<String, Object>>();
	}

	public List<TreeNode> getTreeNode() {
		return treeNodes;
	}

	public void updateTreeNode(List<TreeNode> nodes) {
		this.treeNodes = nodes;
	}

	public void removeAll() {
		treeNodes.clear();
	}

	/**
	 * @param groupPosition
	 * @param childPosition
	 * @return
	 */
	@Override
	public Object getChild(int groupPosition, int childPosition) {
		// TODO Auto-generated method stub
		return treeNodes.get(groupPosition).childList.get(childPosition);
	}

	/**
	 * @param groupPosition
	 * @param childPosition
	 * @return
	 */
	@Override
	public long getChildId(int groupPosition, int childPosition) {
		// TODO Auto-generated method stub
		return childPosition;
	}

	/**
	 * @param groupPosition
	 * @param childPosition
	 * @param isLastChild
	 * @param convertView
	 * @param parent
	 * @return
	 */
	@Override
	public View getChildView(int groupPosition, int childPosition,
			boolean isLastChild, View convertView, ViewGroup parent) {
		if (convertView == null) {
			convertView = layoutInflater.inflate(R.layout.gridview, null);
		}
		gridlistView = (GridlistView) convertView.findViewById(R.id.gridview);
		gridlistView.setAdapter(getMeauAdapter(groupPosition));
		gridlistView.setOnItemClickListener(this);
		return convertView;
	}

	/**
	 * @param groupPosition
	 * @return
	 */
	@Override
	public int getChildrenCount(int groupPosition) {
		// TODO Auto-generated method stub
		return 1;
	}

	/**
	 * @param groupPosition
	 * @return
	 */
	@Override
	public Object getGroup(int groupPosition) {
		// TODO Auto-generated method stub
		return treeNodes.get(groupPosition).parent;
	}

	/**
	 * @return
	 */
	@Override
	public int getGroupCount() {
		// TODO Auto-generated method stub
		return treeNodes.size();
	}

	/**
	 * @param groupPosition
	 * @return
	 */
	@Override
	public long getGroupId(int groupPosition) {
		// TODO Auto-generated method stub
		return groupPosition;
	}

	public Integer getGroupImg(int groupPosition) {
		return treeNodes.get(groupPosition).parentImg;
	}

	/**
	 * @param groupPosition
	 * @param isExpanded
	 * @param convertView
	 * @param parent
	 * @return
	 */
	@Override
	public View getGroupView(int groupPosition, boolean isExpanded,
			View convertView, ViewGroup parent) {
		if (convertView == null) {
			convertView = layoutInflater.inflate(R.layout.groupitem, null);
		}
		ImageView groupImg = (ImageView) convertView
				.findViewById(R.id.group_img);
		TextView groupTv = (TextView) convertView.findViewById(R.id.group_tv);
		groupImg.setImageResource(getGroupImg(groupPosition));
		groupTv.setText(getGroup(groupPosition).toString());
		return convertView;
	}

	/**
	 * @return
	 */
	@Override
	public boolean hasStableIds() {
		// TODO Auto-generated method stub
		return true;
	}

	/**
	 * @param groupPosition
	 * @param childPosition
	 * @return
	 */
	@Override
	public boolean isChildSelectable(int groupPosition, int childPosition) {
		// TODO Auto-generated method stub
		return true;
	}

	private SimpleAdapter getMeauAdapter(int groupPosition) {
		List<Map<String, Object>> data = new ArrayList<Map<String, Object>>();
		int len = treeNodes.get(groupPosition).childList.size();
		for (int i = 0; i < len; i  ) {
			Map<String, Object> map = new HashMap<String, Object>();
			map.put("itemName", treeNodes.get(groupPosition).childList.get(i)
					.get("name"));
			map.put("itemId", treeNodes.get(groupPosition).childList.get(i)
					.get("id"));
			map.put("itemImg", treeNodes.get(groupPosition).childList.get(i)
					.get("img"));
			data.add(map);
		}
		simpleAdapter = new SimpleAdapter(context, data, R.layout.childitem,
				new String[] { "itemImg", "itemName", "itemId" }, new int[] {
						R.id.child_img, R.id.child_tv });

		return simpleAdapter;
	}

	/**
	 * @param arg0
	 * @param arg1
	 * @param arg2
	 * @param arg3
	 */
	@Override
	public void onItemClick(AdapterView<?> parent, View arg1, int position,
			long arg3) {
		Map<String, Object> map = (Map<String, Object>) parent
				.getItemAtPosition(position);
		String name = (String) map.get("itemName");
		Toast.makeText(context, name   "", 0).show();
	}

}